Do you like the Date in the Primary Navigation of the Pretty Darn Cute Design themes?
You can add it yourself. The method of doing so will depend on when you installed Genesis.
For “older” installs of Genesis (prior to Genesis 2.1), this was a default setting, which could be accessed by going to Dashboard > Genesis > Navigation > Primary Navigation Extras.
If you have just recently installed Genesis for the first time, this option is not available, and you will need to use the code snippet provided by StudioPress, which is available here: (you must be logged into your my.studiopress.com to access this snippet).
As always, be careful when updating your functions.php file, as a tiny misstep will result in a crashed site.